Contact Timehint support

Timehint needs Chrome or Brave on a desktop computer, version 114 or later. If you can't see the icon, open the Extensions menu (the puzzle-piece icon), pin Timehint, then click it. If the panel still doesn't open, restart the browser. Other browsers and mobile devices aren't supported in this build. See install and open the side panel.

Timehint works in Gmail on the web, at mail.google.com, and not in the Gmail mobile app. In Google Calendar, times show on an event once you open it, and only for guests you've saved. Reload the Gmail tab, then open a conversation: chips appear on messages you've expanded, not in the inbox list. Finally, check that both switches under Gmail in Settings are on. See the sender chip.

The local-time chip appears only when the sender's address matches a contact saved with a time zone. If they wrote from a different address, you'll see Add timezone instead; save that address too. Also check that Show when a message was sent is on in Settings. Clicking × on a chip hides it for that message only. See the sender chip.

If you chose Dismiss for that sender, Timehint won't offer again for 30 days. The offer is also hidden while Offer to save a sender's timezone is off in Settings. You can always add the person from the side panel instead. See add people.

A suggestion is a clue, not a fact. Timehint suggests a zone from a location line or phone country code in the sender's signature, or from a single time zone named in their message, and you always confirm it. Choose the right zone before you click Add contact. When there's no suggestion, the list starts on your own computer's time zone, so change it. To fix a contact you've already saved, hover over their chip in Gmail and choose Change timezone. See Add timezone.

Hover over the chip. The card's first line shows the time zone saved for that person, and the next line shows how far ahead or behind you they are. If their zone is wrong, choose Change timezone. If every time you see is off by the same amount, your own time zone is probably wrong: check Your timezone in Settings. See when you travel.

Timehint converts times that include a time zone, such as "5pm EST", "17:00 CET" or "noon in Singapore". A time with no zone, like "let's meet at 5", is left alone on purpose, because guessing would be worse. Times already in your time zone, and times in an email you're writing, aren't converted either. See converted times.

Some abbreviations name several places. Timehint reads IST as India Standard Time, CST as US Central Time, BST as British Summer Time and GST as Gulf Standard Time, and there's no setting to change these defaults. A full name is exact: "3pm Irish Standard Time" and "3pm China Standard Time" convert correctly. Our guide to ambiguous abbreviations explains the most common mix-ups, and add people shows how to type a zone exactly.

The suggestion appears when your recipient is saved with a time zone, the time you typed includes a zone (such as "5pm IST"), and that time isn't already in their zone. It stays silent when your saved recipients are in different time zones, because there's no single right answer. See Use their time.

Clocks don't change on the same day everywhere. In 2026 the UK moves its clocks back on October 25 (GOV.UK) and the US on November 1 (NIST), so for that week New York is four hours behind London instead of five. The side panel, the sender chip and converted times all account for this. Use their time converts with today's offsets, so double-check a time you write for a date after a clock change. See Use their time.

Look for a note such as "2 hidden" in the search box: hidden people come back when you search. If you see a line saying someone isn't shown until you set a timezone, click it to add their missing time zone. Without an account, contacts are stored in one browser profile, so they won't appear in a different profile or on another computer, and removing Timehint deletes them. If you use an account, check you're signed in to the same one: your contacts sync to every browser where you sign in. Download your contacts in Settings is still worth using for a copy of your own. See the side panel.

Yes. Sign in to the same free Timehint account on both computers, and your contacts sync between them, along with your places and a few settings. Download your contacts in Settings is still a handy offline copy: it saves a file named "timehint-contacts-" followed by the date. This version can't import that file. See back up your contacts.

Timehint supports Chrome and Brave on desktop, version 114 or later. Other Chromium-based browsers, such as Edge and Arc, may work but aren't tested or supported, and Firefox and Safari aren't supported. There's no mobile version, and Timehint doesn't run in the Gmail app. See before you start.

Timehint reads the messages you open, inside your browser, to find times and sender details. It never uploads the text of your emails. It stores only what it needs: the contacts you save (name, email address and time zone), the senders you've dismissed, and, for saved contacts, a count of the hours of the day their messages arrive. No account is needed. Without one, saved contacts stay on this device; if you sign in, your contacts, places and a few settings sync to your account. Your settings and saved places also go through Chrome's own storage sync, so they may appear in other browsers where you're signed in to Chrome. More detail is in your data, About Timehint and the privacy policy.

Open chrome://extensions (brave://extensions in Brave), find Timehint and click Remove. This deletes the contacts Timehint stored in that browser, so download them first if you want a copy, as described under Settings. Removing the extension doesn't delete an account: to delete your account and the data synced to it, or to remove your email address from the waitlist, email us with the subject "Timehint: privacy request".